.banner {
  width: calc(100% - 80px);
  margin: 0 auto;
}

.banner img {
	display: block;
	width: 100%;
}

.main {
  padding-top: 65px;
  padding-bottom: 120px;
}

.main .item1 h2 {
  font-family: 'helv';
  font-size: 36px;
  color: #1a1512;
  line-height: 76px;
}

.main .item1 .article p {
	font-size: 14px;
	color: #8a8a8a;
	line-height: 28px;
	padding-bottom: 28px;
}

.main .item2 h2 {
  font-family: 'helv';
  font-size: 36px;
  color: #1a1512;
  line-height: 76px;
}

.main .item2 .article {
	padding-bottom: 28px;
}

.main .item2 .article h5 {
	font-size: 24px;
	color: #8a8a8a;
	font-weight: 500;
	line-height: 48px;
	padding-bottom: 10px;
}

.main .item2 .article p {
	font-size: 14px;
	color: #8a8a8a;
	line-height: 28px;
	/*padding-bottom: 28px;*/
}

.main .item3 h2 {
  font-family: 'helv';
  font-size: 36px;
  color: #1a1512;
  line-height: 76px;
}

.main .item3 ul.pic_list {
	display: flex;
	flex-flow: row nowrap;
	justify-content: flex-start;
	margin-left: -20px;
	margin-right: -20px;
}

.main .item3 ul.pic_list li {
	margin: 0 20px;
	width: calc((100% - 160px) / 4);
}

.main .item3 ul.pic_list li img {
	display: block;
	width: 100%;
}

@media screen and (max-width: 1430px ) {
	
	.banner {
		width: 100%;
	}
	
}

@media screen and (max-width: 550px ) {
	
	.main {
		padding-top: 20px;
		padding-bottom: 70px;
	}
	
	.main .item1 h2 {
		font-size: 24px;
		line-height: 48px;
	}
	
	.main .item1 .article p {
		text-align: justify;
		padding-bottom: 18px;
	}
	
	.main .item2 h2 {
		font-size: 24px;
		line-height: 48px;
	}
	
	.main .item2 .article h5 {
		font-size: 18px;
		line-height: 36px;
	}
	
	.main .item2 .article {
		padding-bottom: 18px;
	}
	
	.main .item2 .article p {
		text-align: justify;
	}
	
	.main .item3 h2 {
		font-size: 24px;
		line-height: 48px;
	}
	
	.main .item3 ul.pic_list {
		flex-flow: row wrap;
		margin-left: -5px;
		margin-right: -5px;
	}
	
	.main .item3 ul.pic_list li {
		width: calc((100% - 20px) / 2);
		margin: 0 5px;
		margin-bottom: 10px;
	}
	
	
	
}